Registration Dossier
Registration Dossier
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EC number: 610-949-8 | CAS number: 53045-70-8
Surface tension
Administrative data
Link to relevant study record(s)
- Endpoint:
- surface tension
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 31.08.-10.11.2006
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.5 (Surface Tension)
- Version / remarks:
- 92/69/EEC
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 115 (Surface Tension of Aqueous Solutions)
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- ring method
- Key result
- Surface tension:
- 63.4 mN/m
- Temp.:
- 20 °C
- Conc.:
- 23.8 mg/L
- Conclusions:
- The surface tension of the aqueous solution of the test item at 20 °C was 63 mN/m.
- Executive summary:
The surface tension was determined according to OECD 115 and A.5. European Commission Regulation (EC) No. 440/2008 using the ring method. The method is based on the measurement of the maximum vertical force, which is necessary to separate a ring being in contact with the liquid filled in a measuring cup from the surface of this liquid.
The surface tension of the aqueous solution of the test item at 20 °C was 63 mN/m.
Reference
Individual Results
An aqueous solution of the test item in de-ionized water with a concentration of 1.0 g/I was prepared. The solution was stirred for one hour at 25 °C ± 5 °C. After tempering for 1 hour at 20 ± 0.5°C, the measurement of the surface tension with the test item was carried out at 20 ± 0.5°C. Six measurements every minute were performed.
Measurement | 1 | 2 | 3 | 4 | 5 | 6 |
Time/sec | 147 | 208 | 268 | 329 | 390 | 450 |
σ/mN/m | 63.48 | 63.38 | 63.31 | 63.40 | 63.51 | 63.30 |
Mean value: σ = 63.40 mN/m (corrected by Zuidema and Waters)
Due to the fact that the surface tension is higher than 60 mN/m, the test item has no surface-active properties.
Description of key information
The surface tension of the aqueous solution of the test item at 20 °C was 63 mN/m.
Key value for chemical safety assessment
- Surface tension:
- 63
- in mN/m at 20°C and concentration in mg/L:
- 23.8
Additional information
The surface tension was determined according to OECD 115 and A.5. European Commission Regulation (EC) No. 440/2008 using the ring method. The method is based on the measurement of the maximum vertical force, which is necessary to separate a ring being in contact with the liquid filled in a measuring cup from the surface of this liquid.
The surface tension of the aqueous solution of the test item at 20 °C was 63 mN/m.
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